feat: handle android.intent.action.WEB_SEARCH and open wikipedia links

app/src/main/AndroidManifest.xml

@@ -48,7 +48,6 @@
       </intent-filter>
       <intent-filter>
         <action android:name="android.intent.action.VIEW" />
-
         <category android:name="android.intent.category.DEFAULT" />
         <category android:name="android.intent.category.BROWSABLE" />
 
@@ -58,7 +57,21 @@
         <data android:pathPattern="/.*\\..*\\.zim" />
         <data android:pathPattern="/.*\\..*\\..*\\.zim" />
         <data android:pathPattern="/.*\\..*\\..*\\..*\\.zim" />
-        <data android:host="*" />
+        <data android:host="*"/>
+      </intent-filter>
+
+      <intent-filter android:autoVerify="true">
+        <action android:name="android.intent.action.VIEW" />
+        <category android:name="android.intent.category.DEFAULT" />
+        <category android:name="android.intent.category.BROWSABLE" />
+
+        <data android:scheme="https"/>
+        <data android:scheme="http"/>
+        <data android:host="*.wikipedia.fr"/>
+        <data android:host="*.wikipedia.org"/>
+        <data android:host="*.wikipedia.com"/>
+        <data android:host="*.wikipedia.de"/>
+        <data android:pathPattern=".*"/>
       </intent-filter>
       <intent-filter>
         <action android:name="android.intent.action.VIEW" />
@@ -124,6 +137,16 @@
         <category android:name="android.intent.category.DEFAULT" />
       </intent-filter>
     </activity>
+    <activity-alias
+      android:name=".main.KiwixMainActivityWebSearch"
+      android:exported="true"
+      android:enabled="false"
+      android:targetActivity=".main.KiwixMainActivity" >
+      <intent-filter android:enabled="true">
+        <action android:name="android.intent.action.WEB_SEARCH" />
+        <category android:name="android.intent.category.DEFAULT" />
+      </intent-filter>
+    </activity-alias>
 
     <receiver
       android:name=".main.KiwixSearchWidget"

app/src/main/java/org/kiwix/kiwixmobile/nav/destination/reader/KiwixReaderFragment.kt

@@ -314,7 +314,7 @@ class KiwixReaderFragment : CoreReaderFragment() {
           }, 300)
         }
 
-        else -> activity.toast(R.string.cannot_open_file)
+        else -> {}
       }
     }
     return ShouldCall

core/src/main/java/org/kiwix/kiwixmobile/core/dao/NewBookDao.kt

@@ -17,6 +17,7 @@
  */
 package org.kiwix.kiwixmobile.core.dao
 
+import android.net.Uri
 import io.objectbox.Box
 import io.objectbox.kotlin.inValues
 import io.objectbox.kotlin.query
@@ -94,4 +95,23 @@ class NewBookDao @Inject constructor(private val box: Box<BookOnDiskEntity>) {
       QueryBuilder.StringOrder.CASE_INSENSITIVE
     )
   }.findFirst()
+
+  fun bookMatchingUrl(url: Uri): BookOnDiskEntity? {
+    url.host?.let {
+      it.split(".").let { splittedHost ->
+        val list = box.query {
+          contains(
+            BookOnDiskEntity_.name, if (splittedHost.size > 2) splittedHost[1] else splittedHost[0],
+            QueryBuilder.StringOrder.CASE_INSENSITIVE
+          )
+        }.find()
+        list.sortWith(Comparator { book1: BookOnDiskEntity, book2: BookOnDiskEntity ->
+          if (book1.language == splittedHost[0] || book1.language == splittedHost[splittedHost.size - 1]
+          ) 1 else 0
+        })
+        return@bookMatchingUrl list.first()
+      }
+    }
+    return null
+  }
 }

core/src/main/java/org/kiwix/kiwixmobile/core/main/CoreReaderFragment.kt

@@ -26,6 +26,7 @@ import android.content.Intent
 import android.content.ServiceConnection
 import android.content.SharedPreferences
 import android.content.pm.PackageManager
+import android.content.pm.ResolveInfo
 import android.content.res.AssetFileDescriptor
 import android.content.res.Configuration
 import android.graphics.Canvas
@@ -111,6 +112,8 @@ import org.kiwix.kiwixmobile.core.extensions.ActivityExtensions.observeNavigatio
 import org.kiwix.kiwixmobile.core.extensions.ActivityExtensions.requestNotificationPermission
 import org.kiwix.kiwixmobile.core.extensions.ViewGroupExtensions.findFirstTextView
 import org.kiwix.kiwixmobile.core.extensions.closeFullScreenMode
+import org.kiwix.kiwixmobile.core.CoreApp.Companion.coreComponent
+import org.kiwix.kiwixmobile.core.extensions.coreMainActivity
 import org.kiwix.kiwixmobile.core.extensions.getToolbarNavigationIcon
 import org.kiwix.kiwixmobile.core.extensions.isFileExist
 import org.kiwix.kiwixmobile.core.extensions.setToolTipWithContentDescription
@@ -487,7 +490,10 @@ abstract class CoreReaderFragment :
     setupDocumentParser()
     loadPrefs()
     updateTitle()
-    handleIntentExtras(requireActivity().intent)
+    val intent = requireActivity().intent
+    if (intent != null) {
+      handleIntentExtras(intent)
+    }
     tabRecyclerView?.let {
       it.adapter = tabsAdapter
       tabCallback?.let { callBack ->
@@ -500,7 +506,7 @@ abstract class CoreReaderFragment :
     if (savedInstanceState == null) {
       // call the `onNewIntent` explicitly so that the overridden method in child class will
       // also call, to properly handle the zim file opening when opening the zim file from storage.
-      onNewIntent(requireActivity().intent, requireActivity() as AppCompatActivity)
+      onNewIntent(intent, requireActivity() as AppCompatActivity)
     }
 
     serviceConnection = object : ServiceConnection {
@@ -1538,8 +1544,29 @@ abstract class CoreReaderFragment :
     getCurrentWebView()?.requestLayout()
   }
 
+  private fun canOpenUrl(url: Uri): Boolean {
+    val intent = Intent(Intent.ACTION_VIEW, url)
+    val activities: List<ResolveInfo> =
+      requireActivity().packageManager.queryIntentActivities(
+        intent,
+        android.content.pm.PackageManager.MATCH_DEFAULT_ONLY
+      )
+    for (info in activities) {
+      if (info.activityInfo.packageName == requireActivity().packageName) {
+        return true
+        break
+      }
+    }
+    return false
+  }
+
   override fun openExternalUrl(intent: Intent) {
-    externalLinkOpener?.openExternalUrl(intent)
+    val shouldOpenInApp = sharedPreferenceUtil?.prefSupportedExternalLinksOpenInApp ?: false
+    if (intent.data != null && shouldOpenInApp && canOpenUrl(intent.data!!)) {
+      handleIntentActions(intent)
+    } else {
+      externalLinkOpener?.openExternalUrl(intent)
+    }
   }
 
   protected fun openZimFile(
@@ -1857,16 +1884,46 @@ abstract class CoreReaderFragment :
         requireActivity().intent.action = null
       }
 
+      "android.intent.action.WEB_SEARCH" -> {
+        openSearch(
+          searchString = intent.getStringExtra("query") ?: "",
+          isOpenedFromTabView = false,
+          isVoice = false
+        )
+        intent.action = null
+        requireActivity().intent.action = null
+      }
+
       Intent.ACTION_VIEW -> if (
         (intent.type == null || intent.type != "application/octet-stream") &&
         // Added condition to handle ZIM files. When opening from storage, the intent may
         // return null for the type, triggering the search unintentionally. This condition
         // prevents such occurrences.
         intent.scheme !in listOf("file", "content")
       ) {
-        val searchString = if (intent.data == null) "" else intent.data?.lastPathSegment
+        intent.action = null
+        requireActivity().intent.action = null
+        var searchString: String? = null
+        if (intent.data != null) {
+          val book = coreComponent.newBookDao().bookMatchingUrl(intent.data!!)
+          if (book != null) {
+            (requireActivity() as CoreMainActivity).openPage(
+              pageUrl = "https://kiwix.app/A/" + intent.data!!.lastPathSegment,
+              zimFilePath = book.file.path
+            )
+            return
+          }
+          val params = intent.data!!.queryParameterNames
+          searchString = if (params.contains("search")) {
+            intent.data!!.getQueryParameter("search")
+          } else if (params.contains("q")) {
+            intent.data!!.getQueryParameter("q")
+          } else {
+            intent.data!!.lastPathSegment
+          }
+        }
         openSearch(
-          searchString = searchString,
+          searchString = searchString ?: "",
           isOpenedFromTabView = false,
           isVoice = false
         )

core/src/main/java/org/kiwix/kiwixmobile/core/settings/CorePrefsFragment.kt

@@ -20,6 +20,7 @@ package org.kiwix.kiwixmobile.core.settings
 import android.Manifest
 import android.annotation.SuppressLint
 import android.app.Activity.RESULT_OK
+import android.content.ComponentName
 import android.content.Intent
 import android.content.SharedPreferences
 import android.content.SharedPreferences.OnSharedPreferenceChangeListener
@@ -93,6 +94,7 @@ abstract class CorePrefsFragment :
     setStorage()
     setUpSettings()
     setupZoom()
+    setupWebSearchIntent()
     sharedPreferenceUtil?.let {
       LanguageUtils(requireActivity()).changeFont(
         requireActivity(),
@@ -101,6 +103,21 @@ abstract class CorePrefsFragment :
     }
   }
 
+  private fun setupWebSearchIntent() {
+    val pref = findPreference<Preference>(SharedPreferenceUtil.PREF_ENABLE_WEB_SEARCH_INTENT)
+    pref?.onPreferenceChangeListener =
+      Preference.OnPreferenceChangeListener { _, newValue ->
+        val boolValue = newValue as Boolean
+        val pm: PackageManager = requireActivity().packageManager
+        pm.setComponentEnabledSetting(
+          ComponentName(requireActivity(), "org.kiwix.kiwixmobile.main.KiwixMainActivityWebSearch"),
+          if (boolValue) PackageManager.COMPONENT_ENABLED_STATE_ENABLED else PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
+          PackageManager.DONT_KILL_APP
+        )
+        true
+      }
+  }
+
   private fun setupZoom() {
     val textZoom = findPreference<Preference>(INTERNAL_TEXT_ZOOM)
     textZoom?.onPreferenceChangeListener =

core/src/main/java/org/kiwix/kiwixmobile/core/utils/SharedPreferenceUtil.kt

@@ -81,6 +81,9 @@ class SharedPreferenceUtil @Inject constructor(val context: Context) {
   val prefExternalLinkPopup: Boolean
     get() = sharedPreferences.getBoolean(PREF_EXTERNAL_LINK_POPUP, true)
 
+  val prefSupportedExternalLinksOpenInApp: Boolean
+    get() = sharedPreferences.getBoolean(PREF_SUPPORTED_EXTERNAL_LINKS_OPEN_IN_APP, false)
+
   val isPlayStoreBuild: Boolean
     get() = sharedPreferences.getBoolean(IS_PLAY_STORE_BUILD, false)
 
@@ -280,6 +283,9 @@ class SharedPreferenceUtil @Inject constructor(val context: Context) {
     private const val PREF_NEW_TAB_BACKGROUND = "pref_newtab_background"
     private const val PREF_STORAGE_TITLE = "pref_selected_title"
     const val PREF_EXTERNAL_LINK_POPUP = "pref_external_link_popup"
+    const val PREF_SUPPORTED_EXTERNAL_LINKS_OPEN_IN_APP =
+      "pref_supported_external_links_open_in_app"
+    const val PREF_ENABLE_WEB_SEARCH_INTENT = "pref_enable_web_search_intent"
     const val PREF_SHOW_STORAGE_OPTION = "show_storgae_option"
     private const val PREF_IS_FIRST_RUN = "isFirstRun"
     private const val PREF_SHOW_BOOKMARKS_ALL_BOOKS = "show_bookmarks_current_book"

core/src/main/res/values/strings.xml

@@ -162,6 +162,10 @@
   <string name="time_yesterday">Yesterday</string>
   <string name="pref_external_link_popup_title">Warn when entering external links</string>
   <string name="pref_external_link_popup_summary">Display popup to warn about additional costs or not working in offline links.</string>
+  <string name="pref_supported_external_links_open_in_app_title">Open supported links in app</string>
+  <string name="pref_supported_external_links_open_in_app_summary">Automatically open supported external links within the app</string>
+  <string name="pref_enable_web_search_intent_title">Use as a web search application</string>
+  <string name="pref_enable_web_search_intent_summary">When enabled Kiwix can be used when other applications request a web search</string>
   <string name="external_link_popup_dialog_title">Entering External Link!</string>
   <string name="external_link_popup_dialog_message">You are entering an external link. This could lead to additional costs for data transfer or will just not work when you are offline. Do you want to continue?</string>
   <string name="do_not_ask_anymore">Do not ask anymore</string>

core/src/main/res/xml/preferences.xml

@@ -52,12 +52,27 @@
       android:title="@string/pref_external_link_popup_title"
       app:iconSpaceReserved="false" />
 
+    <SwitchPreferenceCompat
+      android:defaultValue="false"
+      android:key="pref_supported_external_links_open_in_app"
+      android:summary="@string/pref_supported_external_links_open_in_app_summary"
+      android:title="@string/pref_supported_external_links_open_in_app_title"
+      app:iconSpaceReserved="false" />
+
     <SwitchPreferenceCompat
       android:defaultValue="true"
       android:key="pref_wifi_only"
       android:summary="@string/pref_wifi_only"
       android:title="@string/pref_wifi_only"
       app:iconSpaceReserved="false" />
+
+
+    <SwitchPreferenceCompat
+      android:defaultValue="false"
+      android:key="pref_enable_web_search_intent"
+      android:summary="@string/pref_enable_web_search_intent_summary"
+      android:title="@string/pref_enable_web_search_intent_title"
+      app:iconSpaceReserved="false" />
   </PreferenceCategory>
 
   <PreferenceCategory